Grain separator and grader



H. C. WALLACE AND 0. N. GREDELL.

GRAIN SEPARATOR AND GRADER.

7 APPLICATION FILED FEB. I4. I920. 1,360,834.

Patented Nov. 30, 1920.

2 SHEETS-SHEET 1- 11V VENTORS [fa/Aer)? C Mal/ace.

arm IV. Grade/l.

H. C. WALLACE AND 0 N. GREDELL.

GRAIN SEPARATOR AND GRADEB.

APPLICATION FILED FEB. 14, I920.

2 SHEETS-SHEET 2- UNlT E'D STATES V PATENT OFFICE.

HALBERT C. WALLACE, OF KANSAS CITY, AND OTTO N. GREDELL, OF WINWOOD I LAKE, MISSOURI.

GRAIN SEPARATOR AND GRADER.

Specification of Letters Patent. Patent d N 1920 Application filed February- 14, 1920. Serial No. 358,624.

make and use the same, reference being had to the accompanying drawings, and figures of reference marked thereon, which form a .part of this specification.

This invention relates to grain separators and graders and 1t ;1s particularly adapted for use in connection with a pneu-.

matic conveyer, the construction being such that the unclean grain can be introduced into the separator and grader so as to disassociate the heavier or more perfect grain kernels from the inferior and direct them to a suitable receptacle orrepository while the dust, dirt, inferior grain and extraneous matter will be conveyed to grading nozzles or hoppers where itmay be separated accordmg to grade. I

The invention contemplates the provlsion of means whereby the unclean grain may pass into a separator and be directed by a deiiector to a screen baffle so that the first separation will result in an A grade product, the inferior grades being subsequently separated after the dust, dirt and extraneous matter has passed through the screen baflie.

The invention also contemplates a certain novel arrangement of parts and combination of parts which will be referred-to here inafter, it being understood that changes in form, proportion and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

In the drawings,

Figure I is a perspective sectional view through a separator and grader constructed in accordance with our invention Fig. 11 is an elevational view of one end of the separator and grader, part of the wall being broken away to show the deflector and the screen baflle.

Fig. III is an enlarged sectional view showing the grader nozzles or hoppers and the1 jigger with its operating mechanism, anc

Fig. IV is an enlarged view of the hinged joint for the A grade grain chute.

Referring now to the drawings by numerals of reference:

1 designates a casing or housing having an inclined bottom 2, terminating'in a. chute 3 to which a spout 4 is hinged at the upper edge, as indicated at 5, the lower portion of the chute 3 having a segment 6 hinged thereto to bridge the gap between the chute 3 and the spout 4: when the spout 4 is swung to various positions to accommodate different sizes of bins or grain receptacles. Projectingthrough the bottom of the casing 1 j is a conveyer tube or pipe 7, through which grain may be blown into the chamber 8 from any suitable supply as, for example, a pneumatic conveyer, of which the tube 7 'may form-a part. At the top of the tube 7 is anupwardly curved deflector 9, the lower end of which is fastened to the tube and the upper end of which is adjustable in the arc of a circle, as indicated at 10, whereby the upper end may be moved toward and away from the inclined screen bafiie 11, which is diagonally disposed with relation to and forms one wall of the chamber 8, dividing the easing into the chamber 8 and into a chamber 12, into which the dust, dirt and other extraneous matter, as well as the inferior grain, may pass through the meshes of the screen 11, it being apparent that the 1 grade grain will pass over the free end of the deflector and into the chamber 8, to be discharged through the chute 3 and nozzle s in a mannerwell understood. At the upper rear endof the chamber 12 is an air discharge port or opening 13, through which the air and lighter chafl', entering chamber 12, may pass either toatmosphere or to a bag or similar device. which may be fastened .to the neck 1 1 of the port 13.

Letters-Patent is also in communication with chamber 18 and 7 adapted to receive material discharged from the jigger 17, as will be presently explained. The igge'r i's hinged or pivoted upon a shaft 21 to which is rigidly fastened a crank arm 22, adapted to be vibrated by the paddles of a paddle wheel 23, pivoted to the pipe or tube 7 and having its paddle ends extending into the same so'that as the grain passes through 7 into 8,'the paddle 'wheel"-will"be rotated about its axis and impart a vibratorydnotionto arnr22, wl1iclrimparts -a corresponding motion to the jigger or screen 17.

When the parts are-assembled and air is forced through theftube or pipe '7 sofaslto pneumatically convey =the unclean grain into the chamber 8, thestream will strike the-deflector? where it will be fiattene'd'b'y coming in contact therewith and directed against the reticulated battle 11, over which it passes. The more perfect grain designated A lgrade,willbe of such size thatiit may not pass through'themeshes of the screen-11' but'wilLbedirected into the forward portion of chamber 8 through the chute "3 and the spout-4, where-it inay be directed'to a suitable repository. The secondary "prod ucts, however, which pass into the" chamber 12, will come in contact with the baffles 15 'wh'erethe Velocity of-the streamwill be arirested and-the lighter chall permitted to escape through the opening or port 13. The grain and some of'the' objectionable matter will drop through the hopper bottom 16 onto the ji'ggeror screen 17, whichwill be vibrated as described, through the medium of the paddle wheel and vibratory ar1n22 so'that the smaller particles ofgrain will pass intothenozzle orhopper :19, while the chaff and remaining portions will be vibrated by the jigger into-the hop per 20, where-it may a'lso be collected in a manner apparent. to those s'killed in the art. i

(V-hat we-cla-ini and desireto secure by .2. A: grain separator and grader oOmpris "inga casinghavinga grain discharge port at one end and an air discharge portatthe other, a reticulated battle in the cas1ngbetween the grain discharge and air discharge ports to divide thecaslnginto a gram cham- 'ber' anda 'grader chamber, a pneumatic conveyeri pipe discharging into the grain chainber ad aCent t0 the baflle, a curved deflector inthe grain chamber for flattening the grain --stream against the deflector whereby the extraneousmatter will pass throughthe-reticulated baffle and the grain will be retained "withiir the grain'chamber, and means for collectin the material in the, grader chamber.

3. gram separatorand grader comprising a cafsing having a grain discharge port atonei'en'dand 'ana r d scharge port at the other, a reticulated battle "in the, casing 'between the grain discharge and air discharge ports? to divide the easing into av grain cha n ber aird agrader chamber, pneumatic con veyer pipe' disc'harging into'tihe "grain champortion parallel with thereticulated baiiie "to 'flatten-the grain "stream, discharging from the pneumatic conve'yer and to direct the extraneous "matter through the reticulated baffle, and means I for. collectingthe material discharged into the grader chamber..

4. A'comb ned separator and grader comprisi nga casing having a primary grain chamber and secondary grain chamber. a

retic'lll'ated wall separating the two chair bers','1neansfor directing a'stream of grain i'against the "reticulated wall wherebyfthe larger iparticles will "be" screened out, the

larger grain of the stream 'to'be tln own loaclr'into 'the 'firsti grain 'ehamber, the secondary grain f passing into the secondary chamber, a thirdchamber belowthe secondarychamberfspouts discharging therefrom.

and a jigger screen in the. path of one of said spouts. v

5. A combined separator and grader comprising a casing' haying a primary grain 'charfnber and a secondary grain chamber, a reticulated wallseparat ng the two chambers, "means 'for'dlrecting grain against the reticulatedowall whereby the larger particles Wlll be screenedoutfthe stream to 7. remain in the first grain chamber,v the secondary grain; passing into the secon dary cha mber. a thirdchamber' below the secondary chamber, sponts "cj-lfis'charging therefrom, and a jigger screen in'thepath of one of said spouts,

s'aidjjig'ger screen comprising a reticulated sheet, means for. pivoting said sheet, a vibratory arm for actuating the sheet, and a paddlewheel havlng ends enteringthe pneu- 'matic conve'yerand a dapted to contact with the Vibratory arm.

In testimony. whereof we aflixour signatures. v r i r HALBERT C. W'ALLAC-E.

OTTON. GREDELL. f 

